Seam-protecting device for cloth-shearing machines.



J. BROMAN. SEAM PROTECTING DEVICE FOR CLOTH SHEARING MACHINES.. APPLICATION FILED JAN. 31. I917- Iqv e114: 0?.

Patented Feb. 12, 1918 JOHN BBOMAN, F WORCESTER, MASSACHUSETTS, ASSIGIIOR T0 CURTIS & MARBLE MACHINE COMPANY, OF "WORCESTER, MAsSAGI-I sE-Tus CI IUSETTS.

, e CORPORATION 01*. Messe- SEATW-IERGTECTING DEVICE FOR GLOTH-SI-IEAEING MACHINEQ.

tesaese.

Specification of Letters Patent.

Patented lFeh. 12, led

.Applicetiou fi led January 31 191?. Serial Ito. 145,796.

. and useful ln iproren eiits in Seam-Protect- ,llt it... i U M. mg DBVIC6$ for Cloth-Shearing Mechi ucs of i vhich the following is a specification Preparative to the hearing pi ocess t th usual practice to setv r jotherwise secure the oi the ee em p iecesot fabric to s of the goods; thus le .ee e' iier 'e ie if hes te h 5 s d to be passed through the inech ne. lhls sewing is usuallyjt 'oiii one inch to two inches; more or. less, from the extrcnoe end ing loose Pl'OJECtlllg ends Toutside the attaching. "seam. These ends a i e termed headiiiggs aiid the edges thereof are Sqlilfitllllglll qlllfitil; less l'rayedor unei eh. Sh id is heading, during the passage of the sloth througlithe machine,

. the. f

Stationary fabric, WllIQl'l iis coins in contoct i rtlie cutting mech inisin, ahi'ieniay damaged; also the slitting neohanisoi is liahle to he thro i n out ol: ad-

jjiistiii ent, or the blades becomestrained De 1s contact between t 1e reif ol iiing cutter and the aceiit to the sui'tace .wn taut over the restgso that a y progect ng threads or n a- "terials illbe sheared off on the line of: the

ledger, this being the shearing or cutting posit on. he seams and headings as they pass e e. thei'est, are above this poslt-ion; consequently it is essential to raiselthe shearing ihehanism t allow the headings to pass undefthecutters.

It iscustoniary to lift the cutting mechanisin from the shearing pos tion when the hefding approaches and passes over the rest or supporting nieu her; end means of dilteiie t character have soinet ines been provided oh cloth-sheeting niachines tor that .ilillgliOSBQ With long headings the usual lifting is not alone suiilcient to clear the longer headings and prevent their being caught by the cutters, in a way vhich s liaple to damage the fabric; especially with light goods. Hence my inventlon relates to a protector or guard to be interposed between the 1111s of thecloth and tl ie cutt ng inech anlsm, the

illQCllltIllSlll; and to insure the iiisertioii and the shearing action the point of.

the lifting of the cutting parts, and automatically effected by, or in connection with the movement of the cutter supporting frame.

at. prime object oi. my i'tlr'tilllilfill is to provide a tltWliIiQ to he placr. on a. cloth slimming; niecliiiie that, operated ill ttbttllmltidtl with a rcvolrcrsuppoi'tiiig-trame will when. d e sired, i itei'pose a preteetiui; plate he the surface oi the sloth. and the cut it ii'itli li'aival of the protectiiig guard syn chronouslj with the movement. up and of the revelYer-supportiiig frame.

ilnother object is to turnish a device oper ating with tho shitting oi? the cutting parts in a clothe-shearing ioaul ine, that will. jurotect the piocoeonemtim seams and muse loose headings or a I 'ojeeting polti iflt'o he close to the tech oi the tahrie while passing over the rest. iitlso to promut the suetion draft means ii'lmi used, them dr a 'iiiig' the headings tip to the shearing" eutt L These objects ll attain by mechanism eonstructed, combined em; operated in the pcculiar manner explained; the partieuiai subject matter claimed being definitely mpressed in the siuniiiary. In the accompanying drn i'ine s, 'liipg ire it represents an. end elevation i ew oil? such: parts of a cloth-shearing mechanism as Will illustrate y invention. Fig. 2 is a top plan View at one end of the sheer mechanism, and Fig; 3 is a vertical section. 'ocross the rest, cutting devices and seam protector, showing the parts with the revolver-frame as ele- Vated; and with added lines ndicating. the location. of the suction-draft appliance, which in many instances is employed in cloth-shearing machines.

It will be uederstood that the cloth shearing machine to which my invention is adapted, may be of the usual or ell known kind; and that the fabric is advanced past the cutting devices in the manner and by means such as heretofore employed. The machine need not, therefore, be herein shown and described, excepting such parts as have especial relation to the present improvements.

Referring to the drawing, the numeral 10 indicatesghe cuttee-supporting tra n-e which till ' w. F. BROWN.

TIRE TOOL.

APPLICATION LED MAR. 6.1917.

11 %,9-L Patented Feb.12,1918.

awventoz W F BROWN.

attozwu 

